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PLEASE HELP ME PLEASE AND THANK

PLEASE HELP ME PLEASE AND THANK-example-1
User Yeonsoo
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1 Answer

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Answer: OPTION C.

Explanation:

You can observe in the picture given in the exercise that
\angle E is formed by two secants intersecting outside the circle.

It is necessary to remember that, by definition:


Angle\ formed\ by\ two\ Secants=(1)/(2)(Difference\ of\ Intercepted\ Arcs)

You can also identify that the Intercepted Arcs are the following:


CD=110\°\\\\AB=30\°

Then, knowing the measures of the Intercepted Arcs, you can substitute them into the equation shown before and then evaluate, in order to calculate the measure of
\angle E , which is the angle formed by the intersection of the secants.

Therefore, you get:


m\angle E=(1)/(2)(110\°-30\°)\\\\m\angle E=40\°

User Solvek
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